Leather-finishing machine



(No Model.) 2 Sheets-8heet1` 1.

' A. M. BOWERS.

LEATHER PINISHING MAUHIN'E.

Patented July 12, 1887.

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`LEATHER FINISHING'MACHINE.

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NITED STATES PATENT trice.

ALBERT M. BOWERS, OF NEWARK, NEW JERSEY.

LEATHER-FI-NISHING' MACHINE.

SPECIFICATION forming part of Letters Patent No. 366,298, dated July l2, 1887.

Application filed April 5, 1886. Serial No. 197,789.

To all whom `it may conceive:

Be it known that l, ALBERT M. BOWERS, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Leather-Finishing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention has reference to leather glass ing or pebbling machines in general, but more particularly to an improvement in a' machine described in Patent No. 339,134, issued tome April 6, 1886, and adapted to be used for a similar purpose.

The objects of the invention are to enable certain portions of the bed of the machine to be removed and other portions substituted therefor, to provide a device whereby the bed may be quickly and easilyraised and lowered, and to secure an improved tool orstone holder by means of whicha bettersurface is produced on the leather.

Theinvention consists in the construction and combination of parts of the machine, sub. stantially as illustrated in the drawings, and described and claimed hereinafter'.

In the accompanying two sheets of drawings, in which like letters of reference indicate corresponding parts in each of thcviews, Figure l is a side elevation of a machineillus trating my invention. Fig. 2 is a vertical longitudinal section of the leatherholding bed and supporting-frame, illustrating the construction and operation of the raising and lowering mechanism. Fig. 3 is a transverse section of the said bed, die., taken on the line x, Fig. 2. Fig. 4 is a side elevation of one of -the raising or lifting ca`ms, part of which is broken away; and Fig. 5 is an elevation of the back of the lifting-cam. Fig. 6 is a plan of the improved toolholder. Fig. 7 is a section of the same attached to the pivoted arm. Fig. S is a section of the base-frame pieces and an elevation of apivotedoperating-lever secured thereto 5 and Fig. 9 is an elevation of the back of the slotted collar.

(No model.)

The machine to which these improvements are applicable and are specially designed conF ssts of a parallelly-arranged leather-holding bed, A, and 'rocker-tread B, between which oscillates a tool-carrying frame consisting of a rocker, b, held in contact with the tread B by any suitable mechanism, that shown in Fig. l of the drawings being a pivoted lever, b', connected at one end to the rocker by a rod, b2, the other end of said lever being held in engagement with the tread by a rod, b3, and spring b", the remaining portions of the oscillating frame consisting of a beam, c, projecting from the rocker towardthe bed A, and a pivoted arm, c, attached tothe lower end of said beam.

D is a crank-wheel which is connected with and actuates the arm c by a pitmani, d, rigidly attached to the same, the revolution of the said wheel causing an oscillating or reciprocating motion of the beam c and the parts attached thereto, and simultaneously therewith produces a lifting and lowering` movement ofthe pivoted arm c', causing it to approach near to the lcather-holding bed during the downward movement thereof, and to lift away from said bed in its upward or return movement. These several portions of the machine and their operations are, however, more fully set forth in the patent hereinbefore referred to, and are thus briefly described to more clearly explain and illustrate the operation and relations of the parts to which this application particularly refers and is designed to cover.

' The leatherholding or working bed is shown in Figs. l, 2, and 3, and is constructed and adapted to permit certainV portions thereof to be removed and other portions substituted therefor. The said removable portions are the bed A, side guiding-pieces, c u, between which the b'ed moves, and the cross-beams c2 c3, which project on cach side of the guidingpieces, asindicated in Fig. 3, and are provided with inclined or beveled recesses in the ends thereof, as dotted on Fig. 2, said parts being held together by bolts c2, and the necessary elasticity in the bedA supplied by thesprings a5, arranged between the said bed and the cross beams a2 ci. The object of thus connecting the above-described parts together is to en-x ble the said parts to be readily removed to permit the substitution of beds of greater or IOC) less width, according to the nature of the work to be done on the machine. Beneath said removable portions are arranged strips e e', provided with inclines e?, which engage with the inclines ou the cross-beams, as indicated in Fig. 1, and connecting said strips are pieces e3, t one of which is secured a threaded collar, e". The strips e e' move longitudinally on subtending piecesf f', which are secured to the uprights gg of the frame of the machine. The longitudinal movement of the vstri s e e is caused b a screw h turning in a slotted collar, h', secured to a cross-piece, which is in turn bolted to the uprights g g', said screw passing through the threaded collar e, as shown in Fig. 2. By turning said screw the strips are moved longitudinally,and the engagement of the inclined surfaces on said strips and the cross-beams produces a lifting movement of said beams and the workingbed A. Any longitudinal movement of said beams and bed is prevented by the end crossspieces, h2 h2, which are secured to the uprights. 'Io supplement this raising andv lowering of the bed A, which by means of the above-described mechanism may be exactly and nicely adjusted, and to enable the same to be quickly and readily elevated and depressed, is the pur-A pose of ,one portion of this invention.

, In Figs. 2, 3, 4, and 5 is indicated in detail one form of mechanism which is adapted to accomplish this result. In said figures Zindicates a ,curved rod, provided at its center with bolt-flangesl,between which a connecting-rod, l", is pivoted, and on each end thereof with cam projections Z, which rest in or on the subtending pieces f f, and engage with the under side of the strips e e', as shownin Fig.' 2.

On Fig. 1 is shown in dotted lines the position of the lifting devices when in their normal or lowest position, while Fig. 2indicates the relation of the parts when said lifting devices or cams are operated to lift the superincumbent parts. .To operate said cams,a lever, Z, pivoted to the frame ofthe machine at any lsuitable point, may be used,one end of which is pivotally attached to the connecting-rod and the other to a rod, l, having teeth engaging with a stop, Z6. By pulling said rod Z5 one or more teeth, as may be desirable, the cams are caused to engage the strips e e and lift the same, as shown in Fig. 2. From the 'construction of this lifting mechanism it is In Figs. 1,6, and 7 is illustrated an improved tool or stone holder consisting of a frame having arms m, pivotally attached to the arm c -and provided with a partition, m', and a'projecting arm, m2, having a bolt perforation therein. In the space between the partition n, held between leather pieces o, and against the leather next to the partition is placed a steel plate, p, which receives the end of the set-screws p', that hold the several parts together. Above the pivoted tool holding frame is arranged an arm, q, projecting from the pivoted arm c', to which it is secured 5 and extending through said ar'miq and the proj ecting piece m2 on the tool-frame isa bolt, q', around which is arranged a spiral spring, q2, as indicated in Figs. 1 and 7. By reference to said figures it will be seen that said to0lholding frame is arranged on the back of the pivoted arm c', or on that side thereof away from the c1ankwheel, so that as the oscillating beam moves toward the crank and the pivoted arm c approaches near to the bed A the tool is caused to engage with said bed during the forward movement of the beam, being drawn after the arm c', as shown in Fig. 1.

. By virtue of the elasticity of the spring q2, which presses the tool down upon the bed, or

commodatesitself t'o any inequalities in the leather, and also to thick or thin hides. Morecal with that applied by the workman when the hides are treated by hand, the tool being inclined at the same angle as when held in the hands.

By means'of the set-screws r the tool as it becomes worn may be adjusted.

Having thus described .my invention, 1- wish to claim the following: j

1. In a leather-finishing machine, the combination, with the fixed portions of the frame thereof provided with strips having inclined surfaces thereon, of a'spring-supported leatherholding bed, A, side guiding-pieces, a a', arranged on opposite sides of said bed, crosspieces arranged transversely beneath guidingpieces and .provided with inclined surfaces faces on the strips forming part of the fixed or permanent portions of the frame, said bed, guiding-pieces, and cross-pieces being bolted together, andlsuitable cams adapted to ift said parts clear of the permanent portions of the frame, substantially as set forth.

2. In a leather-nishing machine, the combination of an oscillating beam, an arm rigidly secured to and projecting from said beam, a

. tool-carrying frame pivotally secured to said beam and projecting backward therefrom, substantially as described, said frame being provided with an arm, mi, and a partition, m', having set-screws therein, and a spiral spring and supporting rod or bolt, g', interposed between the rigid arm on the oscillating beam the leather placed thereon, the tool readily ac over, the pressure upon the leather is ide`ntithereon, which engage with the inclined surand the end of the frame is arranged the stone IOO IIO

IIS

and the projecting arm m2 on the pivoted frame, substantially as and for the purpose set forth.

3. In a leather-finishing machine, the coinbination, with the leather-holding bed and the frame of the machine, of a rod, Z, having at its extremities cam projections Z3, a connectingrod, and an operating-lever, all said parts be` ing arranged and combined substantially as and for the purposes set forth.

4. In a leather-finishing machine, the conibination, with a leather-holding bed provided with frame-pieces having co operating inclined or beveled surfaces and means for eausing the operative engagement of said inclines, of lifting-cams pivotally arranged beneath the lower of said frame-pieces having the inclined surfaces thereon, and engaging With the under side thereof, and means, substantially as described, for operating said cams, substantially as and for the purposes set forth.

In testimony that I claim` the foregoing I 35 have hereunto set my hand this 3d day of April, 1886.

ALBERT M. BOWERS.

Witnesses:

FREDK. F. CAMPBELL, CHARLES H. PELL. 

